Reading the GSD in Word and Picture. Very nice, but heavy reading. So, ended up looking for some external research on C. Poutiantini spoken about in there, theory is this is the ancestor of all domesticated dogs. Shows a picture of the alleged skull compared to GSD and C. Lupus.
The only research (ahem, wikipedia) I have to supplement the reading is this one page.
Urrasse ? Wikipedia
Any one have anything else on ancient dog lineage?